1
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Maciuk S, Wood SH, Patel VK, Shapland PDP, Tomkinson NCO. Peracid Oxidation of Unactivated sp 3 C-H Bonds: An Important Solvent Effect. Chemistry 2023; 29:e202204007. [PMID: 36888902 PMCID: PMC10946557 DOI: 10.1002/chem.202204007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 03/02/2023] [Accepted: 03/02/2023] [Indexed: 03/10/2023]
Abstract
The peracid oxidation of hydrocarbons in chlorinated solvents is a low yielding and poorly selective process. Through a combination of DFT calculations, spectroscopic studies, and kinetic measurement it is shown that the origin of this is electronic in nature and can be influenced through the addition of hydrogen bond donors (HBD) and hydrogen bond acceptors (HBA). Performing the reaction of a cycloalkane with mCPBA in a fluorinated alcohol solvent such as nonafluoro-tert-butanol (NFTB) or hexafluoroisopropanol (HFIP), which act as strong HBD and poor HBA, leads to significantly higher yields and selectivities being observed for the alcohol product. Application of the optimised reaction conditions allows for the selective oxidation of both cyclic and linear alkane substrates delivering the corresponding alcohol in up to 86 % yield. The transformation shows selectivity for tertiary centres over secondary centres and the oxidation of secondary centres is strongly influenced by stereoelectronic effects. Primary centres are not oxidised by this method. A simple computational model developed to understand this transformation provides a powerful tool to reliably predict the influence of substitution and functionality on reaction outcome.
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Affiliation(s)
- Sergej Maciuk
- Department Pure and Applied Chemistry Thomas Graham BuildingUniversity of StrathclydeGlasgowG1 1XLUK
| | - Susanna H. Wood
- Department Pure and Applied Chemistry Thomas Graham BuildingUniversity of StrathclydeGlasgowG1 1XLUK
| | | | | | - Nicholas C. O. Tomkinson
- Department Pure and Applied Chemistry Thomas Graham BuildingUniversity of StrathclydeGlasgowG1 1XLUK
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2
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Pati BV, Puthalath NN, Banjare SK, Nanda T, Ravikumar PC. Transition metal-catalyzed C-H/C-C activation and coupling with 1,3-diyne. Org Biomol Chem 2023; 21:2842-2869. [PMID: 36917476 DOI: 10.1039/d3ob00238a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
This review provides a broad overview of the recent developments in the field of transition metal-catalyzed C-H/C-C bond activation and coupling with 1,3-diyne for assembling alkynylated heterocycles, bis-heterocycles, and 1,3-enynes. Transition metal-catalyzed inert bond (C-H/C-C) activation has been the focus of attention among synthetic chemists in recent times. Enormous developments have taken place in C-H/C-C bond activation chemistry in the last two decades. In recent years the use of 2π-unsaturated units as coupling partners for the synthesis of heterocycles through C-H/C-C bond activation and annulation sequence has received immense attention. Among the unsaturated units employed for assembling heterocycles, the use of 1,3-diynes has garnered significant attention due to its ability to render bis-heterocycles in a straightforward manner. The C-H bond activation and coupling with 1,3-diyne has been very much explored in recent years. However, the development of strategies for the use of 1,3-diynes in the analogous C-C bond activation chemistry is less explored. Earlier methods employed to assemble bis-heterocycle used heterocycles that were preformed and pre-functionalized via transition metal-catalyzed coupling reactions. The expensive pre-functionalized halo-heterocycles and sensitive and expensive heterocyclic metal reagents limit its broad application. However, the transition metal-catalyzed C-H activation obviates the need for expensive heterocyclic metal reagents and pre-functionalized halo-heterocycles. The C-H bond activation strategy makes use of C-H bonds as functional groups for effecting the transformation. This renders the overall synthetic sequence both step and cost economic. Hence, this strategy of C-H activation and subsequent reaction with 1,3-diyne could be used for the larger-scale synthesis of chemicals in the pharmaceutical industry. Despite these advances, there is still the possibility of exploration of earth-abundant and cost-effective first-row transition metals (Ni, Cu, Mn. Fe, etc.) for the synthesis of bis-heterocycles. Moreover, the Cp*-ligand-free, simple metal-salt-mediated synthesis of bis-heterocycles is also less explored. Thus, more exploration of reaction conditions for the Cp*-free synthesis of bis-heterocycles is called for. We hope this review will inspire scientists to investigate these unexplored domains.
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Affiliation(s)
- Bedadyuti Vedvyas Pati
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Nitha Nahan Puthalath
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Shyam Kumar Banjare
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Tanmayee Nanda
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Ponneri C Ravikumar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
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3
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Kumar S, Kumar Sabbi T, Pingale R, Girase P, Kanchupalli V. 1,3-Diynes: A Versatile Precursor in Transition-Metal Catalyzed (Mediated) C-H Functionalizations. CHEM REC 2023; 23:e202200228. [PMID: 36512645 DOI: 10.1002/tcr.202200228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/25/2022] [Indexed: 12/15/2022]
Abstract
Transition metal-catalyzed C-H functionalization of diverse arenes with alkyne units has attracted enormous attention for decades since they provide straightforward access to various functionalization/annulations, which are commonly present in bioactive compounds and natural products. Recently, conjugated alkynes (1,3-diynes) have been utilized as key coupling partner in many C-H activation reactions due to their versatile characteristic properties. The presence of two C≡C bonds in conjugated 1,3-diyne brings the new diversity in synthetic transformations, such as chemo-, regioselective pathways, mono-bis functionalizations, cascade annulations, etc. Herein, we summarized the latest developments in the realm of transition-metal-catalyzed C-H functionalizations of diverse arenes with 1,3-diynes. Moreover, we highlighted the diverse transformations, conditions, mechanisms and applications of the corresponding reaction in detail.
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Affiliation(s)
- Sanjeev Kumar
- Department of Process Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, Telangana, India
| | - Tharun Kumar Sabbi
- Department of Process Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, Telangana, India
| | - Rasika Pingale
- Department of Process Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, Telangana, India
| | - Pradeep Girase
- Department of Process Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, Telangana, India
| | - Vinaykumar Kanchupalli
- Department of Process Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, Telangana, India
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4
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Knezevic M, Tiefenbacher K. Tweezer-Based C-H Oxidation Catalysts Overriding the Intrinsic Reactivity of Aliphatic Ammonium Substrates. Chemistry 2023; 29:e202203480. [PMID: 36469523 DOI: 10.1002/chem.202203480] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/05/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022]
Abstract
The site-selective C-H oxygenation of alkyl chains as well as deactivated positions remains a great challenge for chemists. Here, we report the synthesis and application of four new supramolecular tweezer-based oxidation catalysts. They consist of the well-explored M(pdp/mcp) oxidation moiety and a molecular tweezer capable of binding ammonium salts. All catalysts display preferential oxidation of the strongly deactivated C3/C4 positions, however to different degrees. Furthermore, the best performing catalyst Fe(pdp)Twe was explored with an expanded substrate scope. It was demonstrated that the deactivated positions C3/C4 are also preferentially oxidized in these cases.
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Affiliation(s)
- Melina Knezevic
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058, Basel, Switzerland
| | - Konrad Tiefenbacher
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058, Basel, Switzerland.,Department of Biosystems Science and Engineering, ETH Zurich, Mattenstrasse 24, 4058, Basel, Switzerland
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5
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Lin L, Zhang XJ, Xu X, Zhao Y, Shi Z. Ru 3 (CO) 12 -Catalyzed Modular Assembly of Hemilabile Ligands by C-H Activation of Phosphines with Isocyanates. Angew Chem Int Ed Engl 2023; 62:e202214584. [PMID: 36479789 DOI: 10.1002/anie.202214584] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/17/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
Hemilabile ligands have been applied extensively in transition metal catalysis, but preparations of these molecules typically require multistep synthesis. Here, modular assembly of diverse phosphine-amide ligands, including related axially chiral compounds, is first reported through ruthenium-catalyzed C-H activation of phosphines with isocyanate directed by phosphorus(III) atoms. High reactivity and regioselectivity can be obtained by using a Ru3 (CO)12 catalyst with a mono-N-protected amino acid ligand. This transformation significantly expands the pool of phosphine-amide ligands, some of which have shown excellent efficiency for asymmetric catalysis. More broadly, the discovery constitutes a proof of principle for facile construction of hemilabile ligands directly from the parent monodentate phosphines by C-H activation with ideal atom, step and redox economy. Several dinuclear ruthenium complexes were characterized by single-crystal X-ray diffraction analysis revealing the key mechanistic features of this transformation.
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Affiliation(s)
- Lin Lin
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Xue-Jun Zhang
- Department of Orthopedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, 210009, China
| | - Xinyu Xu
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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6
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Xu P, Tang Y, Chen Y, Bai J, Zhou P, Wang L, Sun X, Zhou Q. Nickel‐mediated Ortho C(sp
2
)−H Alkoxylation of Amides. ChemistrySelect 2022. [DOI: 10.1002/slct.202203803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Peng Xu
- Research Center of Resources and Environment School of Chemical Engineering and Materials Changzhou Institute of Technology Changzhou 213022 P. R. China
| | - Ying‐Ying Tang
- School of Chemical Engineering and Materials Chang Zhou Institute of Technology 666 Liao he road Changzhou 213032 China
| | - Yi‐Tian Chen
- School of Chemical Engineering and Materials Chang Zhou Institute of Technology 666 Liao he road Changzhou 213032 China
| | - Ji‐Rong Bai
- Research Center of Resources and Environment School of Chemical Engineering and Materials Changzhou Institute of Technology Changzhou 213022 P. R. China
| | - Pin Zhou
- Research Center of Resources and Environment School of Chemical Engineering and Materials Changzhou Institute of Technology Changzhou 213022 P. R. China
| | - Ling‐ling Wang
- Research Center of Resources and Environment School of Chemical Engineering and Materials Changzhou Institute of Technology Changzhou 213022 P. R. China
| | - Xiao‐Nan Sun
- School of Chemical Engineering and Materials Chang Zhou Institute of Technology 666 Liao he road Changzhou 213032 China
| | - Quan‐Fa Zhou
- Research Center of Resources and Environment School of Chemical Engineering and Materials Changzhou Institute of Technology Changzhou 213022 P. R. China
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7
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Mondal A, van Gemmeren M. Silver-Free C-H Activation: Strategic Approaches towards Realizing the Full Potential of C-H Activation in Sustainable Organic Synthesis. Angew Chem Int Ed Engl 2022; 61:e202210825. [PMID: 36062882 PMCID: PMC9828228 DOI: 10.1002/anie.202210825] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Indexed: 01/12/2023]
Abstract
The activation of carbon-hydrogen bonds is considered as one of the most attractive techniques in synthetic organic chemistry because it bears the potential to shorten synthetic routes as well as to produce complementary product scopes compared to traditional synthetic strategies. However, many current methods employ silver salts as additives, leading to stoichiometric metal waste and thereby preventing the full potential of C-H activation to be exploited. Therefore, the development of silver-free protocols has recently received increasing attention. Mechanistically, silver can serve various roles in C-H activation and thus, avoiding the use of silver requires different approaches based on the role it serves in a given process. In this Review, we present the comparison of silver-based and silver-free methods. Focusing on the strategic approaches to develop silver-free C-H activation, we provide the reader with the means to develop sustainable methods for C-H activation.
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Affiliation(s)
- Arup Mondal
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Manuel van Gemmeren
- Otto-Diels-Institut für Organische ChemieChristian-Albrechts-Universität zu KielOtto-Hahn-Platz 424118KielGermany
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8
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Zhou J, Jia M, Song M, Huang Z, Steiner A, An Q, Ma J, Guo Z, Zhang Q, Sun H, Robertson C, Bacsa J, Xiao J, Li C. Chemoselective Oxyfunctionalization of Functionalized Benzylic Compounds with a Manganese Catalyst. Angew Chem Int Ed Engl 2022; 61:e202205983. [PMID: 35594169 PMCID: PMC9400980 DOI: 10.1002/anie.202205983] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Indexed: 11/06/2022]
Abstract
Whilst allowing for easy access to synthetically versatile motifs and for modification of bioactive molecules, the chemoselective benzylic oxidation reactions of functionalized alkyl arenes remain challenging. Reported in this study is a new non‐heme Mn catalyst stabilized by a bipiperidine‐based tetradentate ligand, which enables methylene oxidation of benzylic compounds by H2O2, showing high activity and excellent chemoselectivity under mild conditions. The protocol tolerates an unprecedentedly wide range of functional groups, including carboxylic acid and derivatives, ketone, cyano, azide, acetate, sulfonate, alkyne, amino acid, and amine units, thus providing a low‐cost, more sustainable and robust pathway for the facile synthesis of ketones, increase of complexity of organic molecules, and late‐stage modification of drugs.
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Affiliation(s)
- Jimei Zhou
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Minxian Jia
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Menghui Song
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Zhiliang Huang
- Department of Chemistry University of Liverpool Liverpool L69 7ZD UK
| | - Alexander Steiner
- Department of Chemistry University of Liverpool Liverpool L69 7ZD UK
| | - Qidong An
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Jianwei Ma
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Zhiyin Guo
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Qianqian Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Huaming Sun
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Craig Robertson
- Department of Chemistry University of Liverpool Liverpool L69 7ZD UK
| | - John Bacsa
- Department of Chemistry Emory University 1515 Dickey Dr. Atlanta GA 30322 USA
| | - Jianliang Xiao
- Department of Chemistry University of Liverpool Liverpool L69 7ZD UK
| | - Chaoqun Li
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
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9
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Zhang K, Yu A, Chu X, Li F, Liu J, Liu L, Bai W, He C, Wang X. Biocatalytic Enantioselective β‐Hydroxylation of Unactivated C−H Bonds in Aliphatic Carboxylic Acids. Angew Chem Int Ed Engl 2022; 61:e202204290. [DOI: 10.1002/anie.202204290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Kun Zhang
- College of Bioscience and Biotechnology Yangzhou University Yangzhou Jiangsu 225009 China
| | - Aiqin Yu
- College of Bioscience and Biotechnology Yangzhou University Yangzhou Jiangsu 225009 China
| | - Xuan Chu
- School of Life Science Economic and Technology Development Zone Anhui University Hefei Anhui 230601 China
| | - Fudong Li
- MOE Key Laboratory for Cellular Dynamics School of Life Sciences Division of Life Sciences and Medicine University of Science and Technology of China Hefei Anhui 230027 China
| | - Juan Liu
- Testing Center Yangzhou University Yangzhou Jiangsu 225009 China
| | - Lin Liu
- School of Life Science Economic and Technology Development Zone Anhui University Hefei Anhui 230601 China
| | - Wen‐Ju Bai
- Department of Chemistry Stanford University Stanford CA 94305 USA
| | - Chao He
- School of Life Science Economic and Technology Development Zone Anhui University Hefei Anhui 230601 China
| | - Xiqing Wang
- College of Bioscience and Biotechnology Yangzhou University Yangzhou Jiangsu 225009 China
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10
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Jiang HM, Sun Q, Jiang JP, Qin JH, Ouyang XH, Song RJ. Copper‐Catalyzed Oxidative 1,2‐Alkylarylation of Styrenes with Unactivated C(sp3)‐H Alkanes and Electron‐Rich Aromatics via C(sp3)‐H/C(sp2)‐H Functionalization. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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11
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Alvi S, Jayant V, Ali R. Applications of Oxone® in Organic Synthesis: An Emerging Green Reagent of Modern Era. ChemistrySelect 2022. [DOI: 10.1002/slct.202200704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shakeel Alvi
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, Okhla New Delhi 110025 India
| | - Vikrant Jayant
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, Okhla New Delhi 110025 India
| | - Rashid Ali
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, Okhla New Delhi 110025 India
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12
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Zhang K, Yu A, Chu X, Li F, Liu J, Liu L, Bai W, He C, Wang X. Biocatalytic Enantioselective β‐Hydroxylation of Unactivated C−H Bonds in Aliphatic Carboxylic Acids. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kun Zhang
- College of Bioscience and Biotechnology Yangzhou University Yangzhou Jiangsu 225009 China
| | - Aiqin Yu
- College of Bioscience and Biotechnology Yangzhou University Yangzhou Jiangsu 225009 China
| | - Xuan Chu
- School of Life Science Economic and Technology Development Zone Anhui University Hefei Anhui 230601 China
| | - Fudong Li
- MOE Key Laboratory for Cellular Dynamics School of Life Sciences Division of Life Sciences and Medicine University of Science and Technology of China Hefei Anhui 230027 China
| | - Juan Liu
- Testing Center Yangzhou University Yangzhou Jiangsu 225009 China
| | - Lin Liu
- School of Life Science Economic and Technology Development Zone Anhui University Hefei Anhui 230601 China
| | - Wen‐Ju Bai
- Department of Chemistry Stanford University Stanford CA 94305 USA
| | - Chao He
- School of Life Science Economic and Technology Development Zone Anhui University Hefei Anhui 230601 China
| | - Xiqing Wang
- College of Bioscience and Biotechnology Yangzhou University Yangzhou Jiangsu 225009 China
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13
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Zhou J, Jia M, Song M, Huang Z, Steiner A, An Q, Ma J, Guo Z, Zhang Q, Sun H, Robertson CM, Bacsa J, Xiao J, Li C. Chemoselective Oxyfunctionalization of Functionalized Benzylic Compounds with a Manganese Catalyst. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jimei Zhou
- Shaanxi Normal University School of Chemistry & Chemical Engineering Xi'an CHINA
| | - Minxian Jia
- Shaanxi Normal University School of Chemistry & Chemical Engineering Xi'an UNITED KINGDOM
| | - Menghui Song
- Shaanxi Normal University School of Chemistry & Chemical Engineering Xi'an UNITED KINGDOM
| | - Zhiliang Huang
- University of Liverpool Department of Chemistry UNITED KINGDOM
| | | | - Qidong An
- Shaanxi Normal University School of Chemistry & Chemical Engineering Xi'an UNITED KINGDOM
| | - Jianwei Ma
- Shaanxi Normal University School of Chemistry & Chemical Engineering Xi'an UNITED KINGDOM
| | - Zhiyin Guo
- Shaanxi Normal University School of Chemistry & Chemical Engineering Xi'an UNITED KINGDOM
| | - Qianqian Zhang
- Shaanxi Normal University School of Chemistry & Chemical Engineering Xi'an UNITED KINGDOM
| | - Huaming Sun
- Shaanxi Normal University School of Chemistry & Chemical Engineering Xi'an UNITED KINGDOM
| | | | - John Bacsa
- Emory University Department of Chemistry UNITED KINGDOM
| | - Jianliang Xiao
- University of Liverpool Department of Chemistry Oxford Street L69 7ZD Liverpool UNITED KINGDOM
| | - Chaoqun Li
- Shaanxi Normal University School of Chemistry & Chemical Engineering Xi'an CHINA
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14
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Bhawale RT, Sarothiya D, Kshirsagar UA. Synergistic Approach for Decarboxylative Ortho C‐H Aroylation of 2‐Aryl‐pyrido[1,2‐a]pyrimidin‐4‐ones and Thiazolopyrimidinones by Merging Palladium Catalysis with Photo‐catalysis. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - Umesh A. Kshirsagar
- Indian Institute of Technology Indore Discipline of Chemistry Khandwa Road, Simrol. 453552 Indore INDIA
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15
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Pawar SA, Poojari SV, A VK. Cu2O‐CD nanosuperstructures as a BiomimeticCatalyst for Oxidation of Benzylicsp3 C–H bonds and SecondaryAmines using Molecular Oxygen:First Total Synthesis ofproposed SwerilactoneO. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - Vijay Kumar A
- Institute of Chemical Technology Department of Chemistry C304,Advance CentreDepartment of Chemistry, Institute of Chemical TechnologyNP Marg,Matunga 400019 Mumbai INDIA
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16
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Mondal S, Biswas S, Ghosh KG, Sureshkumar D. TEMPO-Mediated Selective Synthesis of Isoxazolines, 5-Hydroxy-2-isoxazolines, and Isoxazoles via Aliphatic δ-C(sp3)-H Bond Oxidation of Oximes. Chem Asian J 2021; 16:2439-2446. [PMID: 34190407 DOI: 10.1002/asia.202100572] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/20/2021] [Indexed: 12/20/2022]
Abstract
Selective synthesis of three different bioactive heterocycles; isoxazolines, 5-hydroxy-2-isoxazolines and isoxazoles from the same starting material using TEMPO (2,2,6,6-Tetramethylpiperidin-1-oxyl) as a radical initiator is reported. Selectivity was achieved using different oxidants with TEMPO. The reaction goes through a 1,5-HAT (hydrogen atom transfer) process resulting in products with good yields. This strategy offers a straightforward route to three different heterocycles from oximes via radical-mediated C(sp3 )-H oxidation.
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Affiliation(s)
- Santanu Mondal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, 741246, India.,Okinawa Institute of Science and Technology Graduate University (OIST), Okinawa, Japan
| | - Sourabh Biswas
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, 741246, India
| | - Krishna Gopal Ghosh
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, 741246, India
| | - Devarajulu Sureshkumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, 741246, India
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17
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Komiya N, Murahashi SI. Transition Metal-Catalyzed C-H Oxidation of Saturated Hydrocarbons with Molecular Oxygen. CHEM REC 2021; 21:1928-1940. [PMID: 34235852 DOI: 10.1002/tcr.202100154] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 06/22/2021] [Indexed: 01/22/2023]
Abstract
The C-H oxidation of saturated hydrocarbons to the corresponding alcohols and ketones can be performed efficiently at room temperature with molecular oxygen (1 atm) in the presence of acetaldehyde and catalysts such as Fe, Cu(OH)2 , and CuCl2 -18-crown-6 complex. Moreover, extremely high turnover numbers (>27,000) have been obtained for the C-H oxidation of saturated hydrocarbons with molecular oxygen (1 atm) using a combination of Cu(OAc)2 and acetonitrile at 70 °C. Related oxidation reactions such as epoxidation, Baeyer-Villiger reaction, acetoxylation of β-lactams with molecular oxygen and a suitable aldehyde at room temperature are described.
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Affiliation(s)
- Naruyoshi Komiya
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Machikaneyama, Toyonaka, Osaka, 560-8531, Japan.,Dr. N. Komiya, Chemistry Laboratory, The Jikei University School of Medicine, Kokuryo, Chofu, Tokyo, 182-8570, Japan
| | - Shun-Ichi Murahashi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Machikaneyama, Toyonaka, Osaka, 560-8531, Japan
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18
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Xie P, Xue C, Shi S, Du D. Visible-Light-Driven Selective Air-Oxygenation of C-H Bond via CeCl 3 Catalysis in Water. CHEMSUSCHEM 2021; 14:2689-2693. [PMID: 33877736 DOI: 10.1002/cssc.202100682] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/20/2021] [Indexed: 06/12/2023]
Abstract
Visible-light-induced C-H aerobic oxidation is an important chemical transformation that can be applied for the synthesis of aromatic ketones. High-cost catalysts and toxic solvents were generally needed in the present methodologies. Here, an efficient aqueous C-H aerobic oxidation protocol was reported. Through CeCl3 -mediated photocatalysis, a series of aromatic ketones were produced in moderate to excellent yields. With air as the oxidant, this reaction could be performed under mild conditions in water and demonstrated high activity and functional group tolerance. This method is economical, highly efficient, and environmentally friendly, and it will provide inspiration for the development of aqueous photochemical synthesis reactions.
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Affiliation(s)
- Pan Xie
- College of Chemistry and Chemistry Engineering, Shaanxi Key Laboratory of Chemistry Additives for Industry, Shaanxi University of Science & Technology, Xi'an, 710021 (P. R., China
| | - Cheng Xue
- College of Chemistry and Chemistry Engineering, Shaanxi Key Laboratory of Chemistry Additives for Industry, Shaanxi University of Science & Technology, Xi'an, 710021 (P. R., China
| | - Sanshan Shi
- College of Chemistry and Chemistry Engineering, Shaanxi Key Laboratory of Chemistry Additives for Industry, Shaanxi University of Science & Technology, Xi'an, 710021 (P. R., China
| | - Dongdong Du
- College of Chemistry and Chemistry Engineering, Shaanxi Key Laboratory of Chemistry Additives for Industry, Shaanxi University of Science & Technology, Xi'an, 710021 (P. R., China
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19
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Zhou L, Wei S, Lei Z, Zhu G, Zhang Z. Transition-Metal-Free α Csp 3 -H Cyanation of Sulfonamides. Chemistry 2021; 27:7103-7107. [PMID: 33769613 DOI: 10.1002/chem.202100902] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Indexed: 12/18/2022]
Abstract
This report describes the site-selective α-functionalization of sulfonylamide derivatives through the in-situ generation of imine intermediates. The N-F sulfonylamides, which could facilitate the elimination to generate imines, are coupled with TBACN to efficiently and mildly afford α-amino cyanides. Comparing with Strecker reaction, this transformation offers a complementary strategy to efficiently construct α-amino cyanides from direct α C-H functionalization of sulfonylamindes. The reaction is also characterized by broad substrate scope and flash chromatography column free workup. More importantly, the new two-electron pathway to generate imines through manipulation of the leaving group allows us to achieve excellent α site-selectivity.
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Affiliation(s)
- Liejin Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Siqi Wei
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Ziran Lei
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Zuxiao Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
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20
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Tian MQ, Shen ZY, Zhao X, Walsh PJ, Hu XH. Iron-Catalyzed Tertiary Alkylation of Terminal Alkynes with 1,3-Diesters via a Functionalized Alkyl Radical. Angew Chem Int Ed Engl 2021; 60:9706-9711. [PMID: 33590589 DOI: 10.1002/anie.202100641] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/07/2021] [Indexed: 11/11/2022]
Abstract
Direct oxidative C(sp)-H/C(sp3 )-H cross-coupling offers an ideal and environmentally benign protocol for C(sp)-C(sp3 ) bond formations. As such, reactivity and site-selectivity with respect to C(sp3 )-H bond cleavage have remained a persistent challenge. Herein is reported a simple method for iron-catalyzed/silver-mediated tertiary alkylation of terminal alkynes with readily available and versatile 1,3-dicarbonyl compounds. The reaction is suitable for an array of substrates and proceeds in a highly selective manner even employing alkanes containing other tertiary, benzylic, and C(sp3 )-H bonds alpha to heteroatoms. Elaboration of the products enables the synthesis of a series of versatile building blocks. Control experiments implicate the in situ generation of a tertiary carbon-centered radical species.
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Affiliation(s)
- Ming-Qing Tian
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Zhen-Yao Shen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Xuefei Zhao
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Patrick J Walsh
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104, USA
| | - Xu-Hong Hu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
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21
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Tian M, Shen Z, Zhao X, Walsh PJ, Hu X. Iron‐Catalyzed Tertiary Alkylation of Terminal Alkynes with 1,3‐Diesters via a Functionalized Alkyl Radical. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100641] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ming‐Qing Tian
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 China
| | - Zhen‐Yao Shen
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 China
| | - Xuefei Zhao
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 China
| | - Patrick J. Walsh
- Roy and Diana Vagelos Laboratories Penn/Merck Laboratory for High-Throughput Experimentation Department of Chemistry University of Pennsylvania 231 South 34th Street Philadelphia PA 19104 USA
| | - Xu‐Hong Hu
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 China
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22
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Fawcett A, Keller MJ, Herrera Z, Hartwig JF. Site Selective Chlorination of C(sp 3 )-H Bonds Suitable for Late-Stage Functionalization. Angew Chem Int Ed Engl 2021; 60:8276-8283. [PMID: 33480134 DOI: 10.1002/anie.202016548] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 01/03/2021] [Indexed: 01/18/2023]
Abstract
C(sp3 )-Cl bonds are present in numerous biologically active small molecules, and an ideal route for their preparation is by the chlorination of a C(sp3 )-H bond. However, most current methods for the chlorination of C(sp3 )-H bonds are insufficiently site selective and tolerant of functional groups to be applicable to the late-stage functionalization of complex molecules. We report a method for the highly selective chlorination of tertiary and benzylic C(sp3 )-H bonds to produce the corresponding chlorides, generally in high yields. The reaction occurs with a mixture of an azidoiodinane, which generates a selective H-atom abstractor under mild conditions, and a readily-accessible and inexpensive copper(II) chloride complex, which efficiently transfers a chlorine atom. The reaction's exceptional functional group tolerance is demonstrated by the chlorination of >30 diversely functionalized substrates and the late-stage chlorination of a dozen derivatives of natural products and active pharmaceutical ingredients.
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Affiliation(s)
- Alexander Fawcett
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - M Josephine Keller
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Zachary Herrera
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
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23
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Fawcett A, Keller MJ, Herrera Z, Hartwig JF. Site Selective Chlorination of C(sp
3
)−H Bonds Suitable for Late‐Stage Functionalization. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alexander Fawcett
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - M. Josephine Keller
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - Zachary Herrera
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - John F. Hartwig
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
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24
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McMillan AJ, Sieńkowska M, Di Lorenzo P, Gransbury GK, Chilton NF, Salamone M, Ruffoni A, Bietti M, Leonori D. Practical and Selective sp 3 C-H Bond Chlorination via Aminium Radicals. Angew Chem Int Ed Engl 2021; 60:7132-7139. [PMID: 33458924 PMCID: PMC8048631 DOI: 10.1002/anie.202100030] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Indexed: 12/12/2022]
Abstract
The introduction of chlorine atoms into organic molecules is fundamental to the manufacture of industrial chemicals, the elaboration of advanced synthetic intermediates and also the fine-tuning of physicochemical and biological properties of drugs, agrochemicals and polymers. We report here a general and practical photochemical strategy enabling the site-selective chlorination of sp3 C-H bonds. This process exploits the ability of protonated N-chloroamines to serve as aminium radical precursors and also radical chlorinating agents. Upon photochemical initiation, an efficient radical-chain propagation is established allowing the functionalization of a broad range of substrates due to the large number of compatible functionalities. The ability to synergistically maximize both polar and steric effects in the H-atom transfer transition state through appropriate selection of the aminium radical has provided the highest known selectivity in radical sp3 C-H chlorination.
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Affiliation(s)
| | - Martyna Sieńkowska
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - Piero Di Lorenzo
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - Gemma K. Gransbury
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - Nicholas F. Chilton
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - Michela Salamone
- Dipartimento di Scienze e Tecnologie ChimicheUniversità “Tor Vergata”Via della Ricerca Scientifica00133RomeItaly
| | - Alessandro Ruffoni
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - Massimo Bietti
- Dipartimento di Scienze e Tecnologie ChimicheUniversità “Tor Vergata”Via della Ricerca Scientifica00133RomeItaly
| | - Daniele Leonori
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
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25
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McMillan AJ, Sieńkowska M, Di Lorenzo P, Gransbury GK, Chilton NF, Salamone M, Ruffoni A, Bietti M, Leonori D. Practical and Selective sp
3
C−H Bond Chlorination via Aminium Radicals. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Alastair J. McMillan
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - Martyna Sieńkowska
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - Piero Di Lorenzo
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - Gemma K. Gransbury
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - Nicholas F. Chilton
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - Michela Salamone
- Dipartimento di Scienze e Tecnologie Chimiche Università “Tor Vergata” Via della Ricerca Scientifica 00133 Rome Italy
| | - Alessandro Ruffoni
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - Massimo Bietti
- Dipartimento di Scienze e Tecnologie Chimiche Università “Tor Vergata” Via della Ricerca Scientifica 00133 Rome Italy
| | - Daniele Leonori
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
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26
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Saranya TV, Sruthi PR, Ayana N, Anas S. An Efficient Polymer Supported Palladium Catalyst for
ortho
Selective C−H Olefination of Anilides. ChemistrySelect 2021. [DOI: 10.1002/slct.202100052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Thachora Venu Saranya
- School of Chemical Sciences Mahatma Gandhi University Kottayam Kerala India- 686560
- Postgraduate Department of Chemistry T. M. Jacob Memorial Government College, Manimalakunnu Kerala India- 686662
| | | | - Nambokkil Ayana
- Post Graduate and Research Department of Chemistry Sree Narayana College Kannur Kerala India- 670007
| | - Saithalavi Anas
- School of Chemical Sciences Mahatma Gandhi University Kottayam Kerala India- 686560
- Institute for Integrated Programmes and Research in Basic Sciences Mahatma Gandhi University Kottayam Kerala India- 686560
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27
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Ueda M, Kamikawa K, Fukuyama T, Wang YT, Wu YK, Ryu I. Site-Selective Alkenylation of Unactivated C(sp 3 )-H Bonds Mediated by Compact Sulfate Radical. Angew Chem Int Ed Engl 2021; 60:3545-3550. [PMID: 33128429 DOI: 10.1002/anie.202011992] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/27/2020] [Indexed: 01/07/2023]
Abstract
A broad variety of unactivated acyclic and alicyclic substrates cleanly undergo site-selective alkenylation of unactivated C(sp3 )-H bonds with 1,2-bis(phenylsulfonyl)ethene in the presence of persulfate. This simple transformation furnishes (E)-2-alkylvinylphenylsulfones in up to 88 % yield. In contrast with the previously reported decatungstate protocol, the current method is applicable to alkenylation of sterically hindered C-H bonds. This important advantage significantly broadens the substrate scope, and is attributed to the compact size of the sulfate radical employed in the C-H activation and cleavage.
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Affiliation(s)
- Mitsuhiro Ueda
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan
| | - Kazuya Kamikawa
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan
| | - Takahide Fukuyama
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan
| | - Yi-Ting Wang
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan
| | - Yen-Ku Wu
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan
| | - Ilhyong Ryu
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan
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28
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Nunewar S, Kumar S, Talakola S, Nanduri S, Kanchupalli V. Co(III), Rh(III) & Ir(III)‐Catalyzed Direct C−H Alkylation/Alkenylation/Arylation with Carbene Precursors. Chem Asian J 2021; 16:443-459. [DOI: 10.1002/asia.202001219] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 01/13/2021] [Indexed: 12/15/2022]
Affiliation(s)
- Saiprasad Nunewar
- Department of Chemical Sciences National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500 037 Telangana India
| | - Sanjeev Kumar
- Department of Chemical Sciences National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500 037 Telangana India
| | - Srilakshmi Talakola
- Department of Chemical Sciences National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500 037 Telangana India
| | - Srinivas Nanduri
- Department of Chemical Sciences National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500 037 Telangana India
| | - Vinaykumar Kanchupalli
- Department of Chemical Sciences National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500 037 Telangana India
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29
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Koike T, Kosai T, Iwamoto T. Intermolecular C-H Activation at the Allylic/Benzylic and Homoallylic/Homobenzylic Positions of Cyclic Hydrocarbons by a Stable Divalent Silicon Species. Chemistry 2021; 27:724-734. [PMID: 32931054 DOI: 10.1002/chem.202003541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 08/26/2020] [Indexed: 11/11/2022]
Abstract
Direct activation of inert C(sp3 )-H bonds by main group element species is yet a formidable challenge. Herein, the dehydrogenation of cyclohexene and 1,2,3,4-tetrahydronaphthalene through the allylic/benzylic and homoallylic/homobenzylic C-H bond activation by cyclic (alkyl)(amino)silylene 1 in neat conditions is reported to yield the corresponding aromatic compounds. As for the reaction of cyclohexene, allylsilane 3 and 7-silanorbornene 4 were also observed, which could be interpreted as a direct dehydrogenative silylation reaction of monoalkenes at the allylic positions. Experimental and computational studies suggest that the dehydrogenation of cyclohexene at the homoallylic position was accomplished by a combination of silylene 1 and radical intermediates such as hydrosilyl radical INT1 or cyclohexenyl radical H, which are generated in the initial step of the reaction.
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Affiliation(s)
- Taichi Koike
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan
| | - Tomoyuki Kosai
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan
| | - Takeaki Iwamoto
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan
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30
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Sun S, Ma Y, Liu Z, Liu L. Oxidative Kinetic Resolution of Cyclic Benzylic Ethers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202009594] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Shutao Sun
- School of Pharmaceutical Sciences Shandong University Jinan 250100 P. R. China
- School of School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China
| | - Yingang Ma
- School of Pharmaceutical Sciences Shandong University Jinan 250100 P. R. China
| | - Ziqiang Liu
- School of Pharmaceutical Sciences Shandong University Jinan 250100 P. R. China
| | - Lei Liu
- School of Pharmaceutical Sciences Shandong University Jinan 250100 P. R. China
- School of School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China
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31
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Panferova LI, Zubkov MO, Kokorekin VA, Levin VV, Dilman AD. Using the Thiyl Radical for Aliphatic Hydrogen-Atom Transfer: Thiolation of Unactivated C-H Bonds. Angew Chem Int Ed Engl 2020; 60:2849-2854. [PMID: 33146419 DOI: 10.1002/anie.202011400] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 10/10/2020] [Indexed: 12/18/2022]
Abstract
A metal- and catalyst-free thiyl-radical-mediated activation of alkanes is described. Tetrafluoropyridinyl disulfide is used to perform thiolation of the C-H bonds under irradiation with 400 nm light-emitting diodes. The key C-H activation step is believed to proceed via hydrogen-atom abstraction effected by the fluorinated thiyl radical. Secondary, tertiary, and heteroatom-substituted C-H bonds can be involved in the thiolation reaction. The resulting sulfides have wide potential as photoredox-active radical precursors in reactions with alkenes and heteroarenes.
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Affiliation(s)
- Liubov I Panferova
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky prosp. 47, 119991, Moscow, Russian Federation
| | - Mikhail O Zubkov
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky prosp. 47, 119991, Moscow, Russian Federation
| | - Vladimir A Kokorekin
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky prosp. 47, 119991, Moscow, Russian Federation
| | - Vitalij V Levin
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky prosp. 47, 119991, Moscow, Russian Federation
| | - Alexander D Dilman
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky prosp. 47, 119991, Moscow, Russian Federation
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32
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Panferova LI, Zubkov MO, Kokorekin VA, Levin VV, Dilman AD. Using the Thiyl Radical for Aliphatic Hydrogen‐Atom Transfer: Thiolation of Unactivated C−H Bonds. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011400] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Liubov I. Panferova
- N. D. Zelinsky Institute of Organic Chemistry Leninsky prosp. 47 119991 Moscow Russian Federation
| | - Mikhail O. Zubkov
- N. D. Zelinsky Institute of Organic Chemistry Leninsky prosp. 47 119991 Moscow Russian Federation
| | - Vladimir A. Kokorekin
- N. D. Zelinsky Institute of Organic Chemistry Leninsky prosp. 47 119991 Moscow Russian Federation
| | - Vitalij V. Levin
- N. D. Zelinsky Institute of Organic Chemistry Leninsky prosp. 47 119991 Moscow Russian Federation
| | - Alexander D. Dilman
- N. D. Zelinsky Institute of Organic Chemistry Leninsky prosp. 47 119991 Moscow Russian Federation
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33
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Ueda M, Kamikawa K, Fukuyama T, Wang Y, Wu Y, Ryu I. Site‐Selective Alkenylation of Unactivated C(sp
3
)−H Bonds Mediated by Compact Sulfate Radical. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011992] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Mitsuhiro Ueda
- Department of Chemistry Graduate School of Science Osaka Prefecture University Sakai Osaka 599-8531 Japan
| | - Kazuya Kamikawa
- Department of Chemistry Graduate School of Science Osaka Prefecture University Sakai Osaka 599-8531 Japan
| | - Takahide Fukuyama
- Department of Chemistry Graduate School of Science Osaka Prefecture University Sakai Osaka 599-8531 Japan
| | - Yi‐Ting Wang
- Department of Applied Chemistry National Chiao Tung University Hsinchu Taiwan
| | - Yen‐Ku Wu
- Department of Applied Chemistry National Chiao Tung University Hsinchu Taiwan
| | - Ilhyong Ryu
- Department of Chemistry Graduate School of Science Osaka Prefecture University Sakai Osaka 599-8531 Japan
- Department of Applied Chemistry National Chiao Tung University Hsinchu Taiwan
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34
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Sun S, Ma Y, Liu Z, Liu L. Oxidative Kinetic Resolution of Cyclic Benzylic Ethers. Angew Chem Int Ed Engl 2020; 60:176-180. [PMID: 33112503 DOI: 10.1002/anie.202009594] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Indexed: 01/04/2023]
Abstract
A manganese-catalyzed oxidative kinetic resolution of cyclic benzylic ethers through asymmetric C(sp3 )-H oxidation is reported. The practical approach is applicable to a wide range of 1,3-dihydroisobenzofurans bearing diverse functional groups and substituent patterns at the α position with extremely efficient enantiodiscrimination. The generality of the strategy was further demonstrated by efficient oxidative kinetic resolution of another type of five-membered cyclic benzylic ether, 2,3-dihydrobenzofurans, and six-membered 6H-benzo[c]chromenes. Direct late-stage oxidative kinetic resolution of bioactive molecules that are otherwise difficult to access was further explored.
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Affiliation(s)
- Shutao Sun
- School of Pharmaceutical Sciences, Shandong University, Jinan, 250100, P. R. China.,School of School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Yingang Ma
- School of Pharmaceutical Sciences, Shandong University, Jinan, 250100, P. R. China
| | - Ziqiang Liu
- School of Pharmaceutical Sciences, Shandong University, Jinan, 250100, P. R. China
| | - Lei Liu
- School of Pharmaceutical Sciences, Shandong University, Jinan, 250100, P. R. China.,School of School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
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35
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Fe(III) Complexes in Cyclohexane Oxidation: Comparison of Catalytic Activities under Different Energy Stimuli. Catalysts 2020. [DOI: 10.3390/catal10101175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
In this study, the mononuclear Fe(III) complex [Fe(HL)(NO3)(H2O)2]NO3 (1) derived from Nʹ-acetylpyrazine-2-carbohydrazide (H2L) was synthesized and characterized by several physicochemical methods, e.g., elemental analysis, infrared (IR) spectroscopy, electrospray ionization mass spectrometry (ESI-MS), and single crystal X-ray diffraction analysis. The catalytic performances of 1 and the previously reported complexes [Fe(HL)Cl2] (2) and [Fe(HL)Cl(μ-OMe)]2 (3) towards the peroxidative oxidation of cyclohexane under three different energy stimuli (microwave irradiation, ultrasound, and conventional heating) were compared. 1-3 displayed homogeneous catalytic activity, leading to the formation of cyclohexanol and cyclohexanone as final products, with a high selectivity for the alcohol (up to 95%). Complex 1 exhibited the highest catalytic activity, with a total product yield of 38% (cyclohexanol + cyclohexanone) under optimized microwave-assisted conditions.
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36
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Tan Y, Chen S, Zhou Z, Hong Y, Ivlev S, Houk KN, Meggers E. Intramolecular C(sp 3 )-H Bond Oxygenation by Transition-Metal Acylnitrenoids. Angew Chem Int Ed Engl 2020; 59:21706-21710. [PMID: 32729945 PMCID: PMC7756817 DOI: 10.1002/anie.202009335] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Indexed: 02/01/2023]
Abstract
This study demonstrates for the first time that easily accessible transition‐metal acylnitrenoids can be used for controlled direct C(sp3)‐H oxygenations. Specifically, a ruthenium catalyst activates N‐benzoyloxycarbamates as nitrene precursors towards regioselective intramolecular C−H oxygenations to provide cyclic carbonates, hydroxylated carbamates, or 1,2‐diols. The method can be applied to the chemoselective C−H oxygenation of benzylic, allylic, and propargylic C(sp3)−H bonds. The reaction can be performed in an enantioselective fashion and switched in a catalyst‐controlled fashion between C−H oxygenation and C−H amination. This work provides a new reaction mode for the regiocontrolled and stereocontrolled conversion of C(sp3)‐H into C(sp3)−O bonds.
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Affiliation(s)
- Yuqi Tan
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - Shuming Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095-1569, USA
| | - Zijun Zhou
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - Yubiao Hong
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - Sergei Ivlev
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095-1569, USA
| | - Eric Meggers
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
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37
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Tan Y, Chen S, Zhou Z, Hong Y, Ivlev S, Houk KN, Meggers E. Intramolecular C(sp
3
)–H Bond Oxygenation by Transition‐Metal Acylnitrenoids. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009335] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Yuqi Tan
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Shuming Chen
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095-1569 USA
| | - Zijun Zhou
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Yubiao Hong
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Sergei Ivlev
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - K. N. Houk
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095-1569 USA
| | - Eric Meggers
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
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38
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Rozatian N, Harsanyi A, Murray BJ, Hampton AS, Chin EJ, Cook AS, Hodgson DRW, Sandford G. Kinetics of Electrophilic Fluorination of Steroids and Epimerisation of Fluorosteroids. Chemistry 2020; 26:12027-12035. [PMID: 32267575 PMCID: PMC7540021 DOI: 10.1002/chem.202001120] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Indexed: 11/16/2022]
Abstract
Fluorinated steroids, which are synthesised by electrophilic fluorination, form a significant proportion of marketed pharmaceuticals. To gain quantitative information on fluorination at the 6-position of steroids, kinetics studies were conducted on enol ester derivatives of progesterone, testosterone, cholestenone and hydrocortisone with a series of electrophilic N-F reagents. The stereoselectivities of fluorination reactions of progesterone enol acetate and the kinetic effects of additives, including methanol and water, were investigated. The kinetics of epimerisation of 6β-fluoroprogesterone to the more pharmacologically active 6α-fluoroprogesterone isomer in HCl/acetic acid solutions are detailed.
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Affiliation(s)
- Neshat Rozatian
- Chemistry DepartmentDurham UniversitySouth RoadDurhamDH1 3LEUK
| | - Antal Harsanyi
- Chemistry DepartmentDurham UniversitySouth RoadDurhamDH1 3LEUK
| | - Ben J. Murray
- Chemistry DepartmentDurham UniversitySouth RoadDurhamDH1 3LEUK
| | | | - Emily J. Chin
- Chemistry DepartmentDurham UniversitySouth RoadDurhamDH1 3LEUK
| | | | | | - Graham Sandford
- Chemistry DepartmentDurham UniversitySouth RoadDurhamDH1 3LEUK
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39
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Kato T, Maruoka K. Design of Bowl‐Shaped
N
‐Hydroxyimide Derivatives as New Organoradical Catalysts for Site‐Selective C(sp
3
)−H Bond Functionalization Reactions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Terumasa Kato
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China
| | - Keiji Maruoka
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China
- Department of Chemistry Graduate School of Science Kyoto University Sakyo Kyoto 606-8502 Japan
- Graduate School of Pharmaceutical Sciences Kyoto University Sakyo Kyoto 606-8501 Japan
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40
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Knezevic M, Heilmann M, Piccini GM, Tiefenbacher K. Überwindung der intrinsischen Reaktivität bei aliphatischer C‐H‐Oxidation: Bevorzugte C3/C4‐Oxidation von aliphatischen Ammoniumsubstraten. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004242] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Melina Knezevic
- Departement Chemie Universität Basel Mattenstrasse 24a 4058 Basel Schweiz
| | - Michael Heilmann
- Departement Chemie Universität Basel Mattenstrasse 24a 4058 Basel Schweiz
| | - Giovanni Maria Piccini
- Departement Chemie und Angewandte Biowissenschaften ETH Zürich c/o USI Campus, Via Giuseppe Buffi 13 CH-6900 Lugano Schweiz
- Facoltàdi Informatica Istituto di Scienze Computazionali Universitàdella SvizzeraItaliana (USI) Via Giuseppe Buffi 13 CH-6900 Lugano Schweiz
| | - Konrad Tiefenbacher
- Departement Chemie Universität Basel Mattenstrasse 24a 4058 Basel Schweiz
- Departement Biosysteme ETH Zürich Mattenstrasse 24 4058 Basel Schweiz
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41
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Kato T, Maruoka K. Design of Bowl‐Shaped
N
‐Hydroxyimide Derivatives as New Organoradical Catalysts for Site‐Selective C(sp
3
)−H Bond Functionalization Reactions. Angew Chem Int Ed Engl 2020; 59:14261-14264. [DOI: 10.1002/anie.202003982] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 05/26/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Terumasa Kato
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China
| | - Keiji Maruoka
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China
- Department of Chemistry Graduate School of Science Kyoto University Sakyo Kyoto 606-8502 Japan
- Graduate School of Pharmaceutical Sciences Kyoto University Sakyo Kyoto 606-8501 Japan
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42
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Knezevic M, Heilmann M, Piccini GM, Tiefenbacher K. Overriding Intrinsic Reactivity in Aliphatic C−H Oxidation: Preferential C3/C4 Oxidation of Aliphatic Ammonium Substrates. Angew Chem Int Ed Engl 2020; 59:12387-12391. [DOI: 10.1002/anie.202004242] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/20/2020] [Indexed: 01/15/2023]
Affiliation(s)
- Melina Knezevic
- Department of Chemistry University of Basel Mattenstrasse 24a 4058 Basel Switzerland
| | - Michael Heilmann
- Department of Chemistry University of Basel Mattenstrasse 24a 4058 Basel Switzerland
| | - Giovanni Maria Piccini
- Department of Chemistry and Applied Biosciences ETH Zurich c/o USI Campus, Via Giuseppe Buffi 13 CH-6900 Lugano Switzerland
- Facoltàdi Informatica Istituto di Scienze Computazionali Universitàdella SvizzeraItaliana (USI) Via Giuseppe Buffi 13 CH-6900 Lugano Switzerland
| | - Konrad Tiefenbacher
- Department of Chemistry University of Basel Mattenstrasse 24a 4058 Basel Switzerland
- Department of Biosystems Science and Engineering ETH Zurich Mattenstrasse 24 4058 Basel Switzerland
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43
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Singh D, Pandey S, Chouhan PS, Kant R, Chauhan PMS. Copper‐Mediated Intramolecular Oxidative α‐Functionalization of Ugi Precursor: An Efficient Synthesis of Highly Functionalized 2H‐Benzo[e][1,3]oxazin‐4(3H)‐one Derivatives. ChemistrySelect 2020. [DOI: 10.1002/slct.202001165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Deepti Singh
- Medicinal and Process Chemistry DivisionCSIR-Central Drug Research Institute, Sector 10, Jankipuram extension Sitapur Road Lucknow 226031 India
| | - Shashi Pandey
- Medicinal and Process Chemistry DivisionCSIR-Central Drug Research Institute, Sector 10, Jankipuram extension Sitapur Road Lucknow 226031 India
- Department of ChemistryRamadhin CollegeSheikhpura (Munger University Munger Bihar 811105
| | - Pradeep Singh Chouhan
- Medicinal and Process Chemistry DivisionCSIR-Central Drug Research Institute, Sector 10, Jankipuram extension Sitapur Road Lucknow 226031 India
| | - Ruchir Kant
- Molecular and Structural Biology DivisionCSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension Sitapur Road Lucknow 226031 India
| | - Prem M. S. Chauhan
- Medicinal and Process Chemistry DivisionCSIR-Central Drug Research Institute, Sector 10, Jankipuram extension Sitapur Road Lucknow 226031 India
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44
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Kumar R, Parmar D, Gupta SS, Chandra D, Dhiman AK, Sharma U. Cp*Rh
III
‐Catalyzed Sterically Controlled C(sp
3
)−H Selective Mono‐ and Diarylation of 8‐Methylquinolines with Organoborons**. Chemistry 2020; 26:4396-4402. [DOI: 10.1002/chem.201905591] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/14/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Rakesh Kumar
- Natural Product Chemistry and Process Development Division and AcSIR CSIR-IHBT 176061 Palampur India
| | - Diksha Parmar
- Natural Product Chemistry and Process Development Division and AcSIR CSIR-IHBT 176061 Palampur India
| | - Shiv Shankar Gupta
- Natural Product Chemistry and Process Development Division and AcSIR CSIR-IHBT 176061 Palampur India
| | - Devesh Chandra
- Natural Product Chemistry and Process Development Division and AcSIR CSIR-IHBT 176061 Palampur India
| | - Ankit Kumar Dhiman
- Natural Product Chemistry and Process Development Division and AcSIR CSIR-IHBT 176061 Palampur India
| | - Upendra Sharma
- Natural Product Chemistry and Process Development Division and AcSIR CSIR-IHBT 176061 Palampur India
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45
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Dantignana V, Company A, Costas M. Oxoiron(V) Complexes of Relevance in Oxidation Catalysis of Organic Substrates. Isr J Chem 2020. [DOI: 10.1002/ijch.201900161] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Valeria Dantignana
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química Universitat de Girona C/M. Aurèlia Capmany 69 17003 Girona, Catalonia Spain
| | - Anna Company
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química Universitat de Girona C/M. Aurèlia Capmany 69 17003 Girona, Catalonia Spain
| | - Miquel Costas
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química Universitat de Girona C/M. Aurèlia Capmany 69 17003 Girona, Catalonia Spain
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46
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Hayashi H, Uchida T. Nitrene Transfer Reactions for Asymmetric C-H Amination: Recent Development. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901562] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Hiroki Hayashi
- Department of Arts and Science; Kyushu University; 744, Motooka, Nishi-ku 819-0395 Fukuoka Japan
| | - Tatsuya Uchida
- Department of Arts and Science; Kyushu University; 744, Motooka, Nishi-ku 819-0395 Fukuoka Japan
- International Institute for Carbon-Neutral Energy Research; Kyushu University; 744, Motooka, Nishi-ku 819-0395 Fukuoka Japan
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47
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Zhu C, Stangier M, Oliveira JCA, Massignan L, Ackermann L. Iron-Electrocatalyzed C-H Arylations: Mechanistic Insights into Oxidation-Induced Reductive Elimination for Ferraelectrocatalysis. Chemistry 2019; 25:16382-16389. [PMID: 31658385 PMCID: PMC6972497 DOI: 10.1002/chem.201904018] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Indexed: 12/24/2022]
Abstract
Despite major advances, organometallic C-H transformations are dominated by precious 5d and 4d transition metals, such as iridium, palladium and rhodium. In contrast, the unique potential of less toxic Earth-abundant 3d metals has been underexplored. While iron is the most naturally abundant transition metal, its use in oxidative, organometallic C-H activation has faced major limitations due to the need for superstoichiometric amounts of corrosive, cost-intensive DCIB as the sacrificial oxidant. To fully address these restrictions, we describe herein the unprecedented merger of electrosynthesis with iron-catalyzed C-H activation through oxidation-induced reductive elimination. Thus, ferra- and manganaelectro-catalyzed C-H arylations were accomplished at mild reaction temperatures with ample scope by the action of sustainable iron catalysts, employing electricity as a benign oxidant.
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Affiliation(s)
- Cuiju Zhu
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstraße 237077GöttingenGermany
| | - Maximilian Stangier
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstraße 237077GöttingenGermany
| | - João C. A. Oliveira
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstraße 237077GöttingenGermany
| | - Leonardo Massignan
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstraße 237077GöttingenGermany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstraße 237077GöttingenGermany
- Woehler Research Institute for Sustainable Chemistry (WISCh)Georg-August-Universität GöttingenTammannstraße 237077GöttingenGermany
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48
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Gomes SQ, Salles AG. A metal-free approach to access ketones, amides, and nitriles employing TBAI/TBHP oxidative system in water. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1669183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Suzane Quintana Gomes
- Department of Organic Chemistry, Institute of Chemistry, University of Campinas, Campinas, São Paulo, Brazil
| | - Airton G. Salles
- Department of Organic Chemistry, Institute of Chemistry, University of Campinas, Campinas, São Paulo, Brazil
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49
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Wang Y, Chen X, Jin H, Wang Y. Mild and Practical Dirhodium(II)/NHPI-Mediated Allylic and Benzylic Oxidations with Air as the Oxidant. Chemistry 2019; 25:14273-14277. [PMID: 31361049 DOI: 10.1002/chem.201902739] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/28/2019] [Indexed: 11/08/2022]
Abstract
Aerobic allylic and benzylic oxidations catalyzed by dirhodium(II) complexes with N-hydroxyphthalimide (NHPI) are described. The open flask reaction occurs at mild temperature, using air as the oxidant. Mechanistic studies suggest that dirhodium(II) complexes axially coordinate with NHPI to activate the O-H bond in NHPI and decrease the bond-dissociation energy (BDE).
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Affiliation(s)
- Yi Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of, Education, College of Chemistry, Sichuan University, Chengdu, 610064, P.R. China
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of, Education, College of Chemistry, Sichuan University, Chengdu, 610064, P.R. China
| | - Hong Jin
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of, Education, College of Life Sciences, Sichuan University, Chengdu, 610064, P.R. China
| | - Yuanhua Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of, Education, College of Chemistry, Sichuan University, Chengdu, 610064, P.R. China
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50
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D'Accolti L, Annese C, Fusco C. Continued Progress towards Efficient Functionalization of Natural and Non-natural Targets under Mild Conditions: Oxygenation by C-H Bond Activation with Dioxirane. Chemistry 2019; 25:12003-12017. [PMID: 31150563 DOI: 10.1002/chem.201901687] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Indexed: 12/12/2022]
Abstract
The successful isolation and characterization of a dioxirane species in 1988 opened up one of the most attractive methods for the efficient oxidation of simple and/or structurally complex molecules. Dioxirane today rank among the most powerful tools in organic chemistry, with numerous applications in commercially important processes. They were quickly recognized as efficient oxygen transfer agents, especially for epoxidations and for a wide range of O-insertion reactions into C-H bonds. Dioxirane possess catalytic activity and appear as highly (chemo-, regio-, and stereo-) selective oxidants, despite their reactivity under mild and strictly neutral conditions being controlled by a combination of steric and electronic factors. In this review, we discuss some of the most recent and significant developments in the selective homogeneous and heterogeneous oxyfunctionalization of non-activated C-H bonds in hydrocarbons of natural and non-natural targets by using isolated dioxirane or, more generally, by using the ketones (i.e., the dioxirane precursors) as organocatalysts.
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Affiliation(s)
- Lucia D'Accolti
- Chemistry Department, University of Bari, Via Orabona, 4, Bari, Italy
| | - Cosimo Annese
- Institute of Chemistry of Organometallic Compounds, National Council of Research of Italy, CNR-ICCOM, SS Bari, Chemistry Department, University of Bari, Via Orabona, 4, Bari, Italy
| | - Caterina Fusco
- Institute of Chemistry of Organometallic Compounds, National Council of Research of Italy, CNR-ICCOM, SS Bari, Chemistry Department, University of Bari, Via Orabona, 4, Bari, Italy
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